. net/c# measuring run time with stopwatch

Stopwatch class: Http://msdn.microsoft.com/zh-cn/library/system.diagnostics.stopwatch (v=vs.100). aspx

Common Properties and methods:

Start (): Starts or continues to measure the elapsed time of an interval.

Stop (): Stops measuring the elapsed time of an interval.

Elapsedmilliseconds: Gets the total elapsed time (in milliseconds) measured by the current instance.

Example:

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Diagnostics;namespaceboxandunbox{classProgram {Static voidMain (string[] args) {Stopwatch Watch=NewStopwatch (); Watch.            Start (); Longresult =Sumwithoutbox (); Watch.            Stop (); Console.WriteLine ("the Sumwithoutbox () method returns the result of the calculation: {0}, spents {1} milliseconds", result, watch. Elapsedmilliseconds);//gets the total elapsed time (in milliseconds) measured by the current instanceWatch.            Restart (); Result=Sumwithbox (); Watch.            Stop (); Console.WriteLine ("the Sumwithbox () method returns the result of the calculation: {0}, spents {1} milliseconds", result, watch.            Elapsedmilliseconds);        Console.readkey (); }        Static LongSumwithoutbox () {Longsum =0;  for(Longi =0; I <10000000; i++) Sum+=i; returnsum; }        Static LongSumwithbox () {Objectsum =0L;//Packing             for(Longi =0; I <10000000; i++) Sum= (Long) sum + i;//unpacking, summing, and packing first            return(Long) sum;//Unpacking        }    }}

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